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메타버스(Metaverse)를 활용한 직업계고 현장실습 PBL 안전교육 프로그램 프로토타입 개발 연구
안세훈,정주영 한국수산해양교육학회 2022 水産海洋敎育硏究 Vol.34 No.4
Abstract The purpose of this study is to improve the safety education of field trainees at specialized high schools and to strengthen their ability to cope with accidental disaster situations during the training process. The research tasks for this are first, to build a map for the metaverse-based PBL safety education program, and second, to examine the educational usefulness of the developed map. The results of this study are as follows. First, six spaces were constructed using on-the-ground performance and motivational strategies. 'Gamification' elements such as 'escape' games were used to stimulate students' interest, and PBL was used to induce students to immerse themselves in problem situations. Second, as a result of the expert interview, we got the opinion that it is expected that students will be interested and self-directed education will be possible. The prototype presented in this study is expected to increase the effectiveness of disaster prevention and safety education as it can subdivide safety education by occupation and industry above all else.
안세훈 한국복지상담학회 2007 복지상담학연구 Vol.2 No.1
본 연구의 목적은 유아의 인지양식과 정서지능과는 어떤 관계가 있는지를 살펴보는데 있었다. 연구대상을 선정하기 위하여 기초자료로써 먼저 A유치원과 C유치원에 재원중인 만5세 남녀 유아 전체 244명을 대상으로 인지양식검사를 실시하였고, 검사결과, 검사실시요강에 의거하여 장독립적-장의존적인 집단으로 분류된 남녀 유아 144명을 연구대상으로 선정하였다. 자료처리는 유아의 정서지능 요인은 장독립성-장의존성 인지양식에 따라 어떤 차이를 보이는지를 연구가설별로 t-검증을 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 유아의 정서지능 요인중 자기정서의 인식 및 표현, 자기정서의 이용은 장독립적인 유아가 장의존적인 유아보다 높게 나타났으며, 타인정서의 인식 및 배려, 대인관계기술은 장의존적인 유아가 장독립적인 유아보다 높게 나타났다. 둘째, 유아의 정서지능 요인중 자기정서의 조절은 장독립적인 유아와 장의존적인 유아간에 차이가 없는 것으로 나타났다. 셋째, 유아의 정서지능 전체점수 즉 정서지능은 장독립적인 유아가 장의존적인 유아보다 높게 나타났다.
안세훈(Se Hun An),정옥란(Ok Ran Jeong) 한국IT서비스학회 2021 한국IT서비스학회지 Vol.20 No.3
As artificial intelligence is actively studied, chatbot systems are being applied to various fields. In particular, many chatbot systems for psychological counseling have been studied that can comfort modern people. However, while most psychological counseling chatbots are studied as rule-base and deep learning-based chatbots, there are large limitations for each chatbot. To overcome the limitations of psychological counseling using such chatbots, we proposes a novel psychological counseling AI chatbot system. The proposed system consists of a GPT-2 model that generates output sentence for Korean input sentences and an Electra model that serves as sentiment analysis and anxiety cause classification, which can be provided with psychological tests and collective intelligence functions. At the same time as deep learning-based chatbots and conversations take place, sentiment analysis of input sentences simultaneously recognizes user’s emotions and presents psychological tests and collective intelligence solutions to solve the limitations of psychological counseling that can only be done with chatbots. Since the role of sentiment analysis and anxiety cause classification, which are the links of each function, is important for the progression of the proposed system, we experiment the performance of those parts. We verify the novelty and accuracy of the proposed system. It also shows that the AI chatbot system can perform counseling excellently.
Switch를 이용한 1.5 GHz 대역 고출력 Cavity 기반 Tunable Filter
안세훈(Sehoon Ahn),이민호(Minho Lee),박종철(Jongcheol Park),정계택(Gyetaek Jeong) 한국전자파학회 2016 한국전자파학회논문지 Vol.27 No.1
본 논문에서는 기계식 스위치를 이용한 1.5 GHz 대역 고출력 Cavity 기반 튜너블 필터를 설계하고 제작하였다. 불요파를 제거하기 위해 저역통과필터를 삽입하고, 출력을 추출하기 위해 Coupler를 내장하였으며, 고출력에 적합한 기계식스위치를 사용하여 튜너블 필터의 시스템을 구성하였다. 저역통과필터는 4~12.75 GHz까지 40 dB 이상의 감쇄 특성을 얻었고, Coupler는 40 dB의 Coupling Value와 55 dB 이상의 Coupling Isolation을 얻었다. 제작된 기계식 스위치를 사용한 튜너블 필터 시스템은 1,495.9~1,510.9 MHz Bypass Mode에서 0.88 dB, 1,495.9~1,500.9 MHz Fil Mode에서 3.29 dB의 삽입손실 특성 및 중심주파수 1,498.4 MHz에서 132 W의 출력전력과 10 ms 이하의 스위칭 절환속도를 얻었다. In this paper, the tunable filter based on high power cavity using mechanical switch for 1.5 GHz band is presented. The LPF is inserted to eliminate the spurious wave, coupler is embeded to extract the output power, and then the tunable filter system is configured using mechanical switch. The LPF obtains attenuation over 40 dB between 4 GHz and 12.75 GHz, Coupler is satisfied with coupling value 40 dB and coupling isolation over 55 dB. The tunable filter system using mechanical switch obtains insertion loss 0.88 dB at bypass mode between 1,495.9 MHz and 1,510. 9 MHz, 3.29 dB at fil mode between 1,495.9 MHz and 1,500.9 MHz. It is also satisfied with output power of 132 W at the center frequency 1,498.4 MHz, and switching time below 10 ms.
광통신용 세라믹 페룰가공용 연마저석의 마모거동에 대한 유한요소해석 및 실험
안세훈(Ahn Se-Hoon),서창민(Suh Chang-Min),배교석(Bae Kyo-Seouk) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
The characteristics of grinding and wear behavior of diamond wheel for grinding optic connector ferrule was investigated by finite element analysis and wear test in this study. FEA of contact between diamond wheel and ferrule shows that subsurface damage area of ferrule is 13㎛ from grinding contact point. Fallout of abrasives is affected by stress state at the interface. A 2-D finite element model is established to calculate the distribution of stress at the interface. As a result of FEA, fallout condition of abrasive is that the ratio of the critical protrusion and the particle size is about 0.6. To investigate the effect of concentration of wheel, FE model is established. As a result of FEA, lower concentration of diamond wheel has more wear volume because of smaller stress propagation.